Imma Gunsmith!

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gds
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Re: Imma Gunsmith!

Post by gds » Fri Oct 12, 2018 11:12 am

Advertising your services is not considered to be a board violation.

However I do have to take issue with your statement that a pistol length gas system on a 16 inch barrel is beyond ridiculous. Truth be told that statement makes me question your understanding of the 300 blackout in an AR-15. Especially when it comes to subsonic rounds , and loads. Now if you were to state that your preference is a carbine length gas system in a 16 inch barrel. That's fine, that's your preference, and it can in fact be made to work. However a 16 inch barrel with a pistol length gas system gives a tremendous amount of Liberty and freedom in powder and bullet choice that you will not have with a carbine length gas system on a 16 inch barrel, and subsonic loads.

Now, I am not a gunsmith. At best I'm an amateur tinkerer but as I said, I do find that statement a little bit questionable.
Yes, I am a Baptist, and yes I carry a gun. You might think I carry a gun because I don't trust God. Well you would be wrong. I have complete faith in my Lord. It is mankind I have no trust in

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Flatliner
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Re: Imma Gunsmith!

Post by Flatliner » Fri Oct 12, 2018 1:48 pm

What he said...

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rebel
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Re: Imma Gunsmith!

Post by rebel » Fri Oct 12, 2018 8:30 pm

Or an adjustable block.......
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gds
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Re: Imma Gunsmith!

Post by gds » Fri Oct 12, 2018 9:22 pm

Ex Umbra wrote:
gds wrote:
Truth be told that statement makes me question your understanding of the 300 blackout in an AR-15.
Now, I am not a gunsmith. At best I'm an amateur tinkerer but as I said, I do find that statement a little bit questionable.
Flatliner wrote:What he said...
Ever tested gas tube pressure?

I have a strain gauge and all lengths of modified gas tubes for the gauge that tells you the tube/system pressure & duration.

There's pressure, duration and timing,…. regarding a gas imp. system.

It all needs to be in concert for safety, cycling and ...what no one thinks of....longevity.

To give rebuttal to your rebuttal, If you, admittedly are an "amateur" want to "question" my professional gunsmithing... tell me how you have scientifically measure port pressure and duration, with subs and supers, with all tube lengths is a variety of barrel lengths in AR pistols, AR-15's and AR-10's then we can talk at the same level.

ANY barrel and gas system that comes out of my shop will run reliably cycle any load thats on this side of silly, with MAXIMUM longevity and no undue wear.

By the way, its ridiculous to run a pistol length gas system on a 16" barrel.

Substantially harder on components.

But if your happy that’s what matters. Run it. Just always wear safety glasses.
My god, where were you 10 plus years ago when I ventured down this path. With your expert knowledge I could have saved so much time testing things. :roll:

But just so you know. I have had many a professional tell me I could not do things with a 300blk that I have in fact done many times, whether it is hunting, or building the shortest barrel 300blk AR15 currently ever made. That functions. I don't have all those fancy sciency gadgets, but what I do have is practical experience.

It is not ridiculous, It is your opinion that it is not needed. It is my opinion that it is a great option to have for many reasons. And for many it is more practical if they are going to be shooting subsonics, and do not have the time and money to put into specific load development.

Long before you came up on this show, my First 300blk AR15 is a 16inch carbine gas. I have put more round thru that barrel than I have any other gun I own. And that is relatively substantial. So I have the knowledge and experience on how to make a 16in carbine gas 300blk work with subs and supers. Likely before most had ever heard of a 300whisper.

But go on with your bad attitude self. Not like I will need your services anytime, ever. And don't worry I won't be throwing any business your way.
Yes, I am a Baptist, and yes I carry a gun. You might think I carry a gun because I don't trust God. Well you would be wrong. I have complete faith in my Lord. It is mankind I have no trust in

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Flatliner
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Re: Imma Gunsmith!

Post by Flatliner » Fri Oct 12, 2018 9:26 pm

I believe the point is that, if you read much of this forum and the superb and detailed experimentation that has been done with this cartridge, you will find that there is a HUGE body of evidence, actual empirical data, that says that running pistol gas on a 16" or shorter barrel with the 300 AAC will produce the highest likelihood of a successful build that will function with the widest variety of ammo. When purchasing a readily available commercial barrel, of the three common choices in gas port length, for this cartridge, pistol is the way to go. Your statement, "By the way, its ridiculous to run a pistol length gas system on a 16" barrel." simply demonstrates that you have not done your homework.

If you are talking about the specific creation of a custom barrel with a non-standard gas tube location based on measured back pressure for a specific load to generate business, kudos to you, that's cool and I enjoy custom projects as well. However, the statement itself is incorrect. it is not 'ridiculous', it is 'best practice' when looking at builds in most people's budgets.

You will also find that the majority of us also recommend adjustable gas blocks. With an AGB as a well thought out component of the system, you are good to go with about anything you want to run, you can always tune down the gas, creating more isn't near as simple.

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dellet
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Re: Imma Gunsmith!

Post by dellet » Fri Oct 12, 2018 10:19 pm

Here’s the problem.

Show me a 5.56 NATO setup that will function with subs unsuppressed and and we can have a real pissing contest. :lol:

If you look actual pressures a carbine length 5.56 will have very close to the same available port pressure as a super in 300 Blackout with pistol gas. Key word available. Once you open the port to shoot subsonic, you get in trouble. Any 300 Blackout that will shoot subs, is over gassed for supers.

This problem was mitigated by keeping max operating pressures lower than current NATO ammo, because it could not be done with port size.

Not rocket science to understand that a larger bore, using less powder will drop pressure faster than a smaller bore with more powder. A 308 bore has reasonably close to twice the volume of a 223, and pressure drops at a rate accordingly.

Operating pressures are not the problem, it’s how they are managed.
300 Blackout, not just for sub-sonics.

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bangbangping
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Re: Imma Gunsmith!

Post by bangbangping » Sat Oct 13, 2018 8:45 am

If there's any chance you'll cut it to 11" and falsely claim you won the Nationals, you should probably start with pistol gas. :P

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Flatliner
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Re: Imma Gunsmith!

Post by Flatliner » Sat Oct 13, 2018 9:02 am

bangbangping wrote:If there's any chance you'll cut it to 11" and falsely claim you won the Nationals, you should probably start with pistol gas. :P
I may have just pee'd myself... :lol:

To the OP, it's cross thread humor, don't take offense...

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dellet
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Re: Imma Gunsmith!

Post by dellet » Sat Oct 13, 2018 7:05 pm

Ex Umbra wrote:
gds wrote:
Ex Umbra wrote:
My god, where were you 10 plus years ago when I ventured down this path. With your expert knowledge I could have saved so much time testing things. :roll:

But just so you know. I have had many a professional tell me I could not do things with a 300blk that I have in fact done many times, whether it is hunting, or building the shortest barrel 300blk AR15 currently ever made. That functions. I don't have all those fancy sciency gadgets, but what I do have is practical experience.

It is not ridiculous, It is your opinion that it is not needed. It is my opinion that it is a great option to have for many reasons. And for many it is more practical if they are going to be shooting subsonics, and do not have the time and money to put into specific load development.

Long before you came up on this show, my First 300blk AR15 is a 16inch carbine gas. I have put more round thru that barrel than I have any other gun I own. And that is relatively substantial. So I have the knowledge and experience on how to make a 16in carbine gas 300blk work with subs and supers. Likely before most had ever heard of a 300whisper.

But go on with your bad attitude self. Not like I will need your services anytime, ever. And don't worry I won't be throwing any business your way.
Galatians Chapter 5:

" But the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, gentleness and self-control. Against such things there is no law." You might want to re-read through your response to me.

Per what you wrote to me above The One True Living God, Jehovah-Rapha's name is spelled with a capital G. And unless you're specifically talking TO HIM, or ABOUT HIM, your violating the 3rd commandment.

Exodus Chapter 20 for reference.

James Chapter 4: "But he gives us more grace. That is why Scripture says: "God opposes the proud but shows favor to the humble."

In another thread, I replied to you, publicly "" you're obviously very knowledgable. I appreciate & honor that."" That's called Godly humility. And me honoring you, publicly.

Hebrew's Chapter 9: "And as it is appointed unto men once to die, but after this the judgment" Check yourself, "Brother."

Please remove "Baptist" from your signature line. Not for me, but for Jesus. You're a bad witness on the world wide wed. There's too many people out there blackening the eye of Jesus already.

Flatliner wrote:
You will also find that the majority of us also recommend adjustable gas blocks. With an AGB as a well thought out component of the system, you are good to go with about anything you want to run, you can always tune down the gas, creating more isn't near as simple.
Totally agreed. I said in a couple places on this on this forum already that AGB's should have became industry standard on anything AR 15 decades ago.
Wrong tactic.
300 Blackout, not just for sub-sonics.

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Re: Imma Gunsmith!

Post by rlandry6 » Sat Oct 13, 2018 7:07 pm

Maybe this thread should be closed before it erupts into a real pissing contest.
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